From: Evaluation of surgical outcome of Jack vertebral dilator kyphoplasty for osteoporotic vertebral compression fracture—clinical experience of 218 cases
Before surgery
Anterior vertebral body weight (mm) 19.3 ± 3.2
Mid vertebral body height (mm) 18.7 ± 3.0
Cobb angle (°) 16.2 ± 6.6
One week post surgery
25.1 ± 2.6*
24.8 ± 3.0*
8.1 ± 5.6
Final follow-up
24.9 ± 2.6**
24.5 ± 2.9**
8.5 ± 5.6